./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:56:53,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:56:53,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:56:53,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:56:53,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:56:53,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:56:53,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:56:53,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:56:53,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:56:53,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:56:53,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:56:53,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:56:53,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:56:53,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:56:53,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:56:53,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:56:53,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:56:53,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:56:53,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:56:53,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:56:53,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:56:53,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:56:53,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:56:53,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:56:53,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:56:53,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:56:53,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:56:53,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:56:53,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:56:53,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:56:53,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:56:53,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:56:53,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:56:53,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:56:53,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:56:53,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:56:53,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:56:53,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:56:53,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:56:53,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:56:53,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:56:53,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:56:53,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:56:53,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:56:53,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:56:53,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:56:53,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:56:53,438 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:56:53,439 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:56:53,439 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:56:53,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:56:53,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:56:53,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:56:53,440 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:56:53,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:56:53,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:56:53,441 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:56:53,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:56:53,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:56:53,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:56:53,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:56:53,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:56:53,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:56:53,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:56:53,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:56:53,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:56:53,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:56:53,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:56:53,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:56:53,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:56:53,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:56:53,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:56:53,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:56:53,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:56:53,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:56:53,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:56:53,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:56:53,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:56:53,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:56:53,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:56:53,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:56:53,448 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2021-11-07 01:56:53,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:56:53,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:56:53,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:56:53,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:56:53,824 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:56:53,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-07 01:56:53,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/e50d60283/f5a0868ce24f499bb56a86af898c3f22/FLAG261366115 [2021-11-07 01:56:54,663 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:56:54,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-07 01:56:54,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/e50d60283/f5a0868ce24f499bb56a86af898c3f22/FLAG261366115 [2021-11-07 01:56:54,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/e50d60283/f5a0868ce24f499bb56a86af898c3f22 [2021-11-07 01:56:54,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:56:54,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:56:54,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:56:54,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:56:54,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:56:54,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:54" (1/1) ... [2021-11-07 01:56:54,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7848ffb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:54, skipping insertion in model container [2021-11-07 01:56:54,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:54" (1/1) ... [2021-11-07 01:56:54,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:56:54,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:56:55,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-07 01:56:55,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:56:55,529 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:56:55,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71d3e569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:55, skipping insertion in model container [2021-11-07 01:56:55,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:56:55,531 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:56:55,535 INFO L168 Benchmark]: Toolchain (without parser) took 645.41 ms. Allocated memory is still 102.8 MB. Free memory was 62.7 MB in the beginning and 68.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:56:55,536 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 102.8 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:56:55,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.22 ms. Allocated memory is still 102.8 MB. Free memory was 62.5 MB in the beginning and 68.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:56:55,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 102.8 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 642.22 ms. Allocated memory is still 102.8 MB. Free memory was 62.5 MB in the beginning and 68.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:56:57,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:56:57,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:56:57,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:56:57,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:56:57,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:56:57,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:56:57,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:56:57,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:56:57,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:56:57,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:56:57,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:56:57,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:56:57,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:56:57,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:56:58,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:56:58,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:56:58,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:56:58,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:56:58,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:56:58,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:56:58,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:56:58,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:56:58,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:56:58,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:56:58,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:56:58,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:56:58,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:56:58,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:56:58,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:56:58,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:56:58,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:56:58,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:56:58,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:56:58,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:56:58,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:56:58,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:56:58,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:56:58,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:56:58,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:56:58,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:56:58,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:56:58,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:56:58,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:56:58,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:56:58,112 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:56:58,112 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:56:58,113 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:56:58,113 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:56:58,113 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:56:58,113 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:56:58,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:56:58,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:56:58,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:56:58,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:56:58,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:56:58,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:56:58,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:56:58,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:56:58,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:56:58,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:56:58,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:56:58,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:56:58,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:56:58,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:56:58,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:56:58,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:56:58,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:56:58,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:56:58,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:56:58,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:56:58,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:56:58,121 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:56:58,121 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:56:58,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:56:58,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:56:58,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:56:58,122 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2021-11-07 01:56:58,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:56:58,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:56:58,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:56:58,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:56:58,558 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:56:58,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-07 01:56:58,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/b55b81624/d29b047dc5f64f6daa07157041b628ba/FLAGc39236341 [2021-11-07 01:56:59,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:56:59,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-07 01:56:59,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/b55b81624/d29b047dc5f64f6daa07157041b628ba/FLAGc39236341 [2021-11-07 01:56:59,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/data/b55b81624/d29b047dc5f64f6daa07157041b628ba [2021-11-07 01:56:59,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:56:59,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:56:59,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:56:59,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:56:59,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:56:59,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:59" (1/1) ... [2021-11-07 01:56:59,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405319f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:59, skipping insertion in model container [2021-11-07 01:56:59,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:59" (1/1) ... [2021-11-07 01:56:59,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:56:59,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:00,122 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-07 01:57:00,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:00,159 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:57:00,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:00,389 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-07 01:57:00,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:00,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:57:00,541 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-07 01:57:00,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:00,569 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:57:00,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00 WrapperNode [2021-11-07 01:57:00,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:00,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:00,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:57:00,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:57:00,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:00,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:57:00,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:57:00,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:57:00,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:57:00,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:57:00,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:57:00,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:57:00,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (1/1) ... [2021-11-07 01:57:00,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:00,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:57:00,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:57:00,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:57:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:57:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:57:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:57:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:57:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:57:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:57:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:57:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:57:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:57:01,193 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 01:57:11,918 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 01:57:11,918 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 01:57:11,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:57:11,933 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:57:11,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:11 BoogieIcfgContainer [2021-11-07 01:57:11,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:57:11,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:57:11,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:57:11,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:57:11,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:59" (1/3) ... [2021-11-07 01:57:11,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adee9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:11, skipping insertion in model container [2021-11-07 01:57:11,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:00" (2/3) ... [2021-11-07 01:57:11,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adee9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:11, skipping insertion in model container [2021-11-07 01:57:11,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:11" (3/3) ... [2021-11-07 01:57:11,945 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-1.c [2021-11-07 01:57:11,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:57:11,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:57:12,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:57:12,022 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:57:12,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:57:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:57:12,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:12,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:12,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:12,061 INFO L85 PathProgramCache]: Analyzing trace with hash 917223054, now seen corresponding path program 1 times [2021-11-07 01:57:12,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:12,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231708178] [2021-11-07 01:57:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:12,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:12,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:12,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:12,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:57:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:12,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:12,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:12,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:12,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231708178] [2021-11-07 01:57:12,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231708178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:12,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:12,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:12,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304041821] [2021-11-07 01:57:12,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:12,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:12,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:12,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:12,979 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:13,219 INFO L93 Difference]: Finished difference Result 554 states and 944 transitions. [2021-11-07 01:57:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:57:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:13,248 INFO L225 Difference]: With dead ends: 554 [2021-11-07 01:57:13,250 INFO L226 Difference]: Without dead ends: 377 [2021-11-07 01:57:13,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-07 01:57:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-07 01:57:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.5265957446808511) internal successors, (574), 376 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 574 transitions. [2021-11-07 01:57:13,373 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 574 transitions. Word has length 44 [2021-11-07 01:57:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:13,375 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 574 transitions. [2021-11-07 01:57:13,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 574 transitions. [2021-11-07 01:57:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 01:57:13,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:13,388 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:13,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:13,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:13,602 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2042718613, now seen corresponding path program 1 times [2021-11-07 01:57:13,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:13,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579754527] [2021-11-07 01:57:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:13,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:13,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:13,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:13,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:57:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:13,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:13,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:14,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:14,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:14,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579754527] [2021-11-07 01:57:14,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579754527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:14,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:14,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:14,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254117252] [2021-11-07 01:57:14,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:14,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:14,899 INFO L87 Difference]: Start difference. First operand 377 states and 574 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:15,469 INFO L93 Difference]: Finished difference Result 862 states and 1324 transitions. [2021-11-07 01:57:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:15,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-07 01:57:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:15,479 INFO L225 Difference]: With dead ends: 862 [2021-11-07 01:57:15,479 INFO L226 Difference]: Without dead ends: 617 [2021-11-07 01:57:15,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-07 01:57:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-11-07 01:57:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.521103896103896) internal successors, (937), 616 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 937 transitions. [2021-11-07 01:57:15,517 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 937 transitions. Word has length 105 [2021-11-07 01:57:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:15,517 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 937 transitions. [2021-11-07 01:57:15,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 937 transitions. [2021-11-07 01:57:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 01:57:15,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:15,526 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:15,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:15,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:15,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1716174966, now seen corresponding path program 1 times [2021-11-07 01:57:15,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:15,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180830586] [2021-11-07 01:57:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:15,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:15,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:15,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:15,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:57:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:16,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:16,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:57:16,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:57:17,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:17,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180830586] [2021-11-07 01:57:17,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180830586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:17,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:17,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:57:17,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929629254] [2021-11-07 01:57:17,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:17,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:17,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:17,568 INFO L87 Difference]: Start difference. First operand 617 states and 937 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:17,978 INFO L93 Difference]: Finished difference Result 1222 states and 1863 transitions. [2021-11-07 01:57:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:17,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 01:57:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:17,985 INFO L225 Difference]: With dead ends: 1222 [2021-11-07 01:57:17,985 INFO L226 Difference]: Without dead ends: 737 [2021-11-07 01:57:17,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-07 01:57:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-07 01:57:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.517663043478261) internal successors, (1117), 736 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1117 transitions. [2021-11-07 01:57:18,023 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1117 transitions. Word has length 169 [2021-11-07 01:57:18,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:18,024 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1117 transitions. [2021-11-07 01:57:18,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1117 transitions. [2021-11-07 01:57:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 01:57:18,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:18,029 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:18,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:18,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:18,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash 738648727, now seen corresponding path program 1 times [2021-11-07 01:57:18,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:18,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155825109] [2021-11-07 01:57:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:18,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:18,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:18,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:57:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:18,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:18,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-07 01:57:19,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-07 01:57:20,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:20,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155825109] [2021-11-07 01:57:20,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155825109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:20,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:20,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:20,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38271672] [2021-11-07 01:57:20,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:20,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:20,258 INFO L87 Difference]: Start difference. First operand 737 states and 1117 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:20,936 INFO L93 Difference]: Finished difference Result 1582 states and 2409 transitions. [2021-11-07 01:57:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:20,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-07 01:57:20,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:20,945 INFO L225 Difference]: With dead ends: 1582 [2021-11-07 01:57:20,945 INFO L226 Difference]: Without dead ends: 977 [2021-11-07 01:57:20,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-07 01:57:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-07 01:57:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.5153688524590163) internal successors, (1479), 976 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1479 transitions. [2021-11-07 01:57:21,006 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1479 transitions. Word has length 210 [2021-11-07 01:57:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:21,007 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1479 transitions. [2021-11-07 01:57:21,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1479 transitions. [2021-11-07 01:57:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-07 01:57:21,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:21,017 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:21,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:21,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:21,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1549103668, now seen corresponding path program 1 times [2021-11-07 01:57:21,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:21,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182768687] [2021-11-07 01:57:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:21,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:21,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:21,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:21,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:57:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:22,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:57:22,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:22,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:57:22,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:57:22,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:22,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:57:22,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:22,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 01:57:22,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-07 01:57:23,219 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 01:57:23,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 717 treesize of output 669 [2021-11-07 01:57:23,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:23,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:57:23,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-07 01:57:23,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-07 01:57:23,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 01:57:23,577 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:57:23,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 01:57:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:23,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 01:57:23,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 01:57:23,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 01:57:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-07 01:57:24,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:25,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:57:25,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 01:57:25,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 01:57:25,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 01:57:25,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 01:57:25,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 01:57:25,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 01:57:25,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:57:25,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 01:57:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-07 01:57:26,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:26,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182768687] [2021-11-07 01:57:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182768687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:26,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:26,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:57:26,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512340299] [2021-11-07 01:57:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:57:26,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:26,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:57:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:57:26,353 INFO L87 Difference]: Start difference. First operand 977 states and 1479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:47,944 INFO L93 Difference]: Finished difference Result 1951 states and 2954 transitions. [2021-11-07 01:57:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:57:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-07 01:57:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:47,953 INFO L225 Difference]: With dead ends: 1951 [2021-11-07 01:57:47,953 INFO L226 Difference]: Without dead ends: 977 [2021-11-07 01:57:47,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:57:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-07 01:57:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-07 01:57:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.514344262295082) internal successors, (1478), 976 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1478 transitions. [2021-11-07 01:57:47,993 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1478 transitions. Word has length 292 [2021-11-07 01:57:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:47,994 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1478 transitions. [2021-11-07 01:57:47,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1478 transitions. [2021-11-07 01:57:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-07 01:57:48,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:48,001 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:48,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:48,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:48,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1801868810, now seen corresponding path program 1 times [2021-11-07 01:57:48,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:48,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306269769] [2021-11-07 01:57:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:48,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:48,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:48,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:48,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:57:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:49,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:57:49,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:50,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:50,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:50,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:57:50,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:57:50,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:57:50,520 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-07 01:57:50,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-07 01:57:50,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:57:50,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:57:50,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:57:50,941 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 01:57:50,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-07 01:57:53,549 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:57:53,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-07 01:57:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-07 01:57:53,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-07 01:57:54,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:54,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306269769] [2021-11-07 01:57:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306269769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:54,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:54,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 01:57:54,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774721886] [2021-11-07 01:57:54,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:57:54,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:57:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:57:54,838 INFO L87 Difference]: Start difference. First operand 977 states and 1478 transitions. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:47,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:58:47,006 INFO L93 Difference]: Finished difference Result 4405 states and 6696 transitions. [2021-11-07 01:58:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:58:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-07 01:58:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:58:47,031 INFO L225 Difference]: With dead ends: 4405 [2021-11-07 01:58:47,032 INFO L226 Difference]: Without dead ends: 3438 [2021-11-07 01:58:47,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 576 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:58:47,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-11-07 01:58:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 1319. [2021-11-07 01:58:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.5933232169954477) internal successors, (2100), 1318 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2100 transitions. [2021-11-07 01:58:47,143 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2100 transitions. Word has length 292 [2021-11-07 01:58:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:58:47,144 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2100 transitions. [2021-11-07 01:58:47,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:58:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2100 transitions. [2021-11-07 01:58:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-07 01:58:47,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:58:47,152 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:58:47,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:58:47,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:58:47,366 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:58:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:58:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1372210504, now seen corresponding path program 1 times [2021-11-07 01:58:47,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:58:47,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034936747] [2021-11-07 01:58:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:58:47,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:58:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:58:47,369 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:58:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eb18f-d9a6-4052-b73a-bb9947c05749/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:58:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:58:53,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:58:53,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:58:53,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:58:53,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 01:58:53,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 131 [2021-11-07 01:58:53,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 107 [2021-11-07 01:58:53,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:58:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:53,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:58:55,291 INFO L354 Elim1Store]: treesize reduction 1579, result has 17.5 percent of original size [2021-11-07 01:58:55,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 31 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 107 treesize of output 371 [2021-11-07 01:59:19,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:59:19,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:59:19,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:59:19,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:20,325 INFO L354 Elim1Store]: treesize reduction 1322, result has 7.7 percent of original size [2021-11-07 01:59:20,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 391 treesize of output 509 [2021-11-07 02:00:57,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:00:57,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 109 treesize of output 45 [2021-11-07 02:00:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-07 02:00:58,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:01,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 589 treesize of output 493 [2021-11-07 02:01:01,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 301